modular_input.py
This module provides a base class of Splunk modular input.
__all__ = ['ModularInputException', 'ModularInput']
module-attribute
¶
ModularInput
¶
Base class of Splunk modular input.
It’s a base modular input, it should be inherited by sub modular input. For sub modular input, properties: ‘app’, ‘name’, ‘title’ and ‘description’ must be overriden, also there are some other optional properties can be overriden like: ‘use_external_validation’, ‘use_single_instance’, ‘use_kvstore_checkpointer’ and ‘use_hec_event_writer’.
Notes: If you set ‘KVStoreCheckpointer’ or ‘use_hec_event_writer’ to True, you must override the corresponding ‘kvstore_checkpointer_collection_name’ and ‘hec_input_name’.
Examples:
>>> class TestModularInput(ModularInput):
>>> app = 'TestApp'
>>> name = 'test_modular_input'
>>> title = 'Test modular input'
>>> description = 'This is a test modular input'
>>> use_external_validation = True
>>> use_single_instance = False
>>> use_kvstore_checkpointer = True
>>> kvstore_checkpointer_collection_name = 'TestCheckpoint'
>>> use_hec_event_writer = True
>>> hec_input_name = 'TestEventWriter'
>>>
>>> def extra_arguments(self):
>>> ... .. .
>>>
>>> def do_validation(self, parameters):
>>> ... .. .
>>>
>>> def do_run(self, inputs):
>>> ... .. .
>>>
>>> if __name__ == '__main__':
>>> md = TestModularInput()
>>> md.execute()
Source code in solnlib/modular_input/modular_input.py
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app = None
class-attribute
instance-attribute
¶
checkpointer: checkpointer.Checkpointer
property
¶
Get checkpointer object.
The checkpointer returned depends on use_kvstore_checkpointer flag, if use_kvstore_checkpointer is true will return an KVStoreCheckpointer object else an FileCheckpointer object.
Returns:
Type | Description |
---|---|
checkpointer.Checkpointer
|
A checkpointer object. |
config_name = None
instance-attribute
¶
description = None
class-attribute
instance-attribute
¶
event_writer: event_writer.EventWriter
property
¶
Get event writer object.
The event writer returned depends on use_hec_event_writer flag, if use_hec_event_writer is true will return an HECEventWriter object else an ClassicEventWriter object.
Returns:
Type | Description |
---|---|
event_writer.EventWriter
|
Event writer object. |
hec_global_settings_schema = False
class-attribute
instance-attribute
¶
hec_input_name = None
class-attribute
instance-attribute
¶
kvstore_checkpointer_collection_name = None
class-attribute
instance-attribute
¶
name = None
class-attribute
instance-attribute
¶
server_host = None
instance-attribute
¶
server_host_name = None
instance-attribute
¶
server_port = None
instance-attribute
¶
server_scheme = None
instance-attribute
¶
server_uri = None
instance-attribute
¶
session_key = None
instance-attribute
¶
should_exit = False
instance-attribute
¶
title = None
class-attribute
instance-attribute
¶
use_external_validation = False
class-attribute
instance-attribute
¶
use_hec_event_writer = True
class-attribute
instance-attribute
¶
use_kvstore_checkpointer = True
class-attribute
instance-attribute
¶
use_single_instance = False
class-attribute
instance-attribute
¶
__init__()
¶
Source code in solnlib/modular_input/modular_input.py
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do_run(inputs)
abstractmethod
¶
Runs this modular input.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
inputs |
dict
|
Command line arguments passed to this modular input. For single instance mode, inputs like::
For multiple instance mode, inputs like::
|
required |
Source code in solnlib/modular_input/modular_input.py
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do_validation(parameters)
¶
Handles external validation for modular input kinds.
When Splunk calls a modular input script in validation mode, it will pass in an XML document giving information about the Splunk instance (so you can call back into it if needed) and the name and parameters of the proposed input. If this function does not throw an exception, the validation is assumed to succeed. Otherwise any errors thrown will be turned into a string and logged back to Splunk.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
parameters |
The parameters of input passed by splunkd. |
required |
Raises:
Type | Description |
---|---|
Exception
|
If validation is failed. |
Source code in solnlib/modular_input/modular_input.py
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execute()
¶
Modular input entry.
Examples:
>>> class TestModularInput(ModularInput):
>>> ... .. .
>>>
>>> if __name__ == '__main__':
>>> md = TestModularInput()
>>> md.execute()
Source code in solnlib/modular_input/modular_input.py
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extra_arguments()
¶
Extra arguments for modular input.
Default implementation is returning an empty list.
Returns:
Type | Description |
---|---|
List
|
List of arguments like:: [ { ‘name’: ‘arg1’, ‘title’: ‘arg1 title’, ‘description’: ‘arg1 description’, ‘validation’: ‘arg1 validation statement’, ‘data_type’: Argument.data_type_string, ‘required_on_edit’: False, ‘required_on_create’: False }, {…}, {…} ] |
Source code in solnlib/modular_input/modular_input.py
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get_input_definition()
¶
Get input definition.
This method can be overwritten to get input definition from
other input instead stdin
.
Returns:
Type | Description |
---|---|
dict
|
A dict object must contain example: { ‘metadata’: { ‘session_key’: ‘iCKPS0cvmpyeJk…sdaf’, ‘server_host’: ‘test-test.com’, ‘server_uri’: ‘https://127.0.0.1:8089’, ‘checkpoint_dir’: ‘/tmp’ }, inputs: { ‘stanza1’: {‘arg1’: value1, ‘arg2’: value2}, ‘stanza2’: {‘arg1’: value1, ‘arg2’: value2} } } |
Source code in solnlib/modular_input/modular_input.py
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get_validation_definition()
¶
Get validation definition.
This method can be overwritten to get validation definition from
other input instead stdin
.
Returns:
Type | Description |
---|---|
dict
|
A dict object must contains example: { ‘metadata’: { ‘session_key’: ‘iCKPS0cvmpyeJk…sdaf’, ‘server_host’: ‘test-test.com’, ‘server_uri’: ‘https://127.0.0.1:8089’, ‘checkpoint_dir’: ‘/tmp’ }, parameters: {‘args1’: value1, ‘args2’: value2} } |
Source code in solnlib/modular_input/modular_input.py
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register_orphan_handler(handler, *args)
¶
Register orphan process handler.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
handler |
Callable
|
Teardown signal handler. |
required |
args |
Arguments to the handler. |
()
|
Examples:
>>> mi = ModularInput(...)
>>> def orphan_handler(arg1, arg2, ...):
>>> ...
>>> mi.register_orphan_handler(orphan_handler, arg1, arg2, ...)
Source code in solnlib/modular_input/modular_input.py
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register_teardown_handler(handler, *args)
¶
Register teardown signal handler.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
handler |
Callable
|
Teardown signal handler. |
required |
args |
Arguments to the handler. |
()
|
Examples:
>>> mi = ModularInput(...)
>>> def teardown_handler(arg1, arg2, ...):
>>> ...
>>> mi.register_teardown_handler(teardown_handler, arg1, arg2, ...)
Source code in solnlib/modular_input/modular_input.py
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ModularInputException
¶
Bases: Exception
Exception for ModularInput class.
Source code in solnlib/modular_input/modular_input.py
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